<template>
  <view class="category-head-mutli">
    <scroll-view scroll-x @scroll="handleCategory">
      <view class="scroll-wrap">
        <view class="category-head-mutli-item">
          <navigator v-for="item in categoryHeadMutli" :key="item.id">
            <image mode="widthFix" :src="item.icon"></image>
            <text>{{ item.name }}</text>
          </navigator>
        </view>
      </view>
    </scroll-view>
    <view class="scroll-bar">
      <view class="scroll-bar-inner" :style="{ transform: `translateX(${scrollLeft})` }"></view>
    </view>
  </view>
</template>

<script>
import { mapState } from 'vuex';
export default {
  props: ["categoryHeadMutli"],
  data() {
    return {
      scrollLeft: 0,
    };
  },
  computed: {
    ...mapState(['safeArea'])
  },
  methods: {
    handleCategory(e) {
      // console.log(e);
      // 获取 当前左边滚动距离
      const scrollLeft = e.detail.scrollLeft

      // 获取当前设备 屏幕宽度
      const screenWidth = this.safeArea.width

      // 计算 滑动的比例
      const rate = (scrollLeft / screenWidth) * 100 + '%'

      this.scrollLeft = rate
    },
  },
};
</script>

<style lang="scss">
.category-head-mutli {
  background-color: #f7f7f8;
  position: relative;
  padding-bottom: 30rpx;

  .scroll-wrap {
    width: 200%;
  }

  .category-head-mutli-item {
    width: 50%;
    display: flex;
    flex-wrap: wrap;

    navigator {
      text-align: center;
      width: 20%;
      padding: 15rpx;

      image {
        width: 100rpx;
        display: block;
        margin: 0 auto;
      }

      text {
        font-size: 26rpx;
        color: #666;
      }
    }
  }

  .scroll-bar {
    position: absolute;
    bottom: 15rpx;
    left: 50%;
    transform: translateX(-50%);
    width: 100rpx;
    height: 8rpx;
    background-color: #e2e2e2;
    z-index: 200;

    .scroll-bar-inner {
      width: 50%;
      height: 100%;
      position: absolute;
      left: 0;
      top: 0;
      background-color: #00c09b;
    }
  }
}
</style>